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IAUC 3140: 1977 UB; SN IN Anon GALAXY; B2 1308+32 = CSVS 6997 = OP 313

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IAUC number 

                                                  Circular No. 3140
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Cable Address: SATELLITES, NEWYORK     Telex: 921428
Telephone: (617) 864-5758


1977 UB
     The following precise positions have been reported:

     1977 UT             R. A. (1950) Decl.        Observer
     Nov. 12.15003     2 01 08.10   +11 43 29.5    Schwartz
          12.20208     2 01 07.55   +11 43 26.8    Mulholland
          14.18681     2 00 47.33   +11 41 29.2      "
          15.17016     2 00 37.38   +11 40 31.8    McCrosky

G. Schwartz and R. E. McCrosky (Harvard College Observatory, Agassiz
   Station).  155-cm reflector.  Measurer: C.-Y. Shao.
J. D. Mulholland and P. J. Shelus (McDonald Observatory).  208-cm
   reflector.  Measurer: M. A. Dritschel.


SUPERNOVA IN ANONYMOUS GALAXY
     Shao reports the discovery of a supernova on the above-mentioned
exposures for 1977 UB by Schwartz and McCrosky.  It is located
at R.A. = 2h01m13s.10, Decl. = +11o43'30".3 (equinox 1950.0), 16" west
and 5" north of the nucleus of a faint spiral galaxy; the supernova's
visual magnitude faded from ~ 17.8 on Nov. 12 to ~ 18.1 on
Nov. 15.  S. J. Bus, California Institute of Technology, informs us
that the supernova is also present on the discovery plate and subsequent
exposures of 1977 UB with the Palomar 122-cm Schmidt telescope,
as well as on an exposure with the 46-cm Schmidt on Oct. 11.
On Oct. 11 and 18-19 mv was ~ 16.5 or slightly brighter.


B2 1308+32 = CSVS 6997 = OP 313
     E. W. Gottlieb, L. J. Chaisson and W. Liller, Center for
Astrophysics, report that these three designations all probably refer
to the same object, a BL-Lac-type object that appears at the B2
position on the Palomar Sky Survey (mpg ~ 19).  Several optical
outbursts, notably one to mpg = 14.3 in 1973, have been identified
in the Harvard plate collection.  OP 313 is not centered on the
object, but the Ohio Survey points out that the position is distorted
by a nearby source.  The CSVS 6997 position, quoted on IAUC 3051,
falls to the east of the object, although the original finding
chart pictorially matches the Palomar Sky Survey position.  The
outburst reported by Kukarkin and Kurochkin (IAUC 3051) occurred at
a time (1958) not covered by the Harvard data.


1977 November 21               (3140)              Brian G. Marsden

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